概要
今回は右側にニュース欄を加えます。
News APIからニュース情報を取得
「Show more」ボタンを押すと表示するニュース件数を３件増やす
開発環境
OS:Windows10
IDE:VSCode
package.json
{
"name": "",
"private": true,
"scripts": {
"dev": "next dev",
"build": "next build",
"start": "next start",
"lint": "next lint"
},
"dependencies": {
"@heroicons/react": "^1.0.6",
"next": "12.0.9",
"react": "17.0.2",
"react-dom": "17.0.2"
},
"devDependencies": {
"@types/node": "^20.4.2",
"@types/react": "^18.2.15",
"autoprefixer": "^10.4.2",
"eslint": "8.8.0",
"eslint-config-next": "12.0.9",
"postcss": "^8.4.5",
"tailwindcss": "^3.0.18"
}
}
実装のポイント
NewsAPIでデータ取得してブラウザ上で表示
show moreボタンを押すと表示件数が+3される 表示件数の変数をuseEffectにする
コード部分
News
News.jsx
export default function News({article}){
return(
<a href={article.url} target="_blank">
<div className="flex items-center justify-between px-4 py-2 space-x-1 hover:bg-gray-200 transition duration-200">
<div className="space-y-0.5">
<h6 className="text-sm font-bold">{article.title}</h6>
<p className="text-xs font-medium text-gray-500">{article.source.name}</p>
</div>
<img className="rounded-xl" width="70" src={article.urlToImage} alt="" />
</div>
</a>
)
}
Widgets
Widgets.jsx
import { SearchIcon } from "@heroicons/react/outline";
import News from "./News";
+ import { useState } from "react";
+ export default function Widgets({ newsResults }) {
+ const [articleNum, setArticleNum] = useState(3);
return (
<div className="xl:w-[600px] hidden lg:inline ml-8 space-y-5">
<div className="w-[90%] xl:w-[75%] sticky top-0 bg-white py-1.5 z-50">
<div className="flex items-center p-3 rounded-full bg-red-300 relative">
<SearchIcon className="h-5 z-50 text-gray-500" />
<input
className="absolute inset-0 rounded-full pl-11 border-gray-500 text-gray-700 focus:shadow-lg focus:bg-white bg-gray-100 "
type="text"
placeholder="Search Twitter"
/>
</div>
</div>
+ <div className="text-gray-700 space-y-3 bg-gray-100 rounded-xl pt-2 w-[90%] xl:w-[75%]">
+ <h4 className="font-bold text-xl px-4">What's happening</h4>
+ {newsResults.slice(0, articleNum).map((article) => (
+ <News key={article.title} article={article} />
+ ))}
+ <button onClick={()=>setArticleNum(articleNum + 3)} className="text-blue-300 pl-4 pb-3 hover:text-blue-400">
+ Show more
+ </button>
+ </div>
</div>
);
}
page/index
index.jsx
import Head from 'next/head'
import Image from 'next/image'
import Sidebar from '../components/Sidebar';
import Feed from '../components/Feed';
import Widgets from '../components/Widgets';
- export default function Home() {
+ export default function Home({ newsResults }) {
return (
<div>
<Head>
<title>Twitter Clone</title>
<meta name="description" content="Generated by create next app" />
<link rel="icon" href="/favicon.ico" />
</Head>
- <main className="flex min-h-screen max-w-7xl mx-auto">
+ <main className="flex min-h-screen mx-auto">
{/* Header */}
{/* Sidebar */}
<Sidebar />
{/* Feed */}
<Feed/>
{/* Modal */}
- <Widgets />
+ <Widgets newsResults={newsResults.articles} />
</main>
</div>
)
}
+ export async function getServerSideProps() {
+ const newsResults = await fetch(
+ "https://saurav.tech/NewsAPI/top-headlines/category/business/us.json"
+ ).then((res) => res.json());
+ return {
+ props: {
+ newsResults,
+ },
+ };
}
参考
css
javascript
Next.js
SSR
React
firebase
その他
NewAPI top-headline
パラメーター
レスポンス（Postmanで確認）
Udemy
- Create the news section of the widgets component
githubコミット分